55872132 has 48 divisors (see below), whose sum is σ = 138583872. Its totient is φ = 17459200.

The previous prime is 55872127. The next prime is 55872161. The reversal of 55872132 is 23127855.

It is a junction number, because it is equal to n+sod(n) for n = 55872093 and 55872102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81463 + ... + 82145.

It is an arithmetic number, because the mean of its divisors is an integer number (2887164).

Almost surely, 2^55872132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55872132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69291936).

55872132 is an abundant number, since it is smaller than the sum of its proper divisors (82711740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55872132 is a wasteful number, since it uses less digits than its factorization.

55872132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1106 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 55872132 is about 7474.7663508634. The cubic root of 55872132 is about 382.2948209679.

Adding to 55872132 its reverse (23127855), we get a palindrome (78999987).

The spelling of 55872132 in words is "fifty-five million, eight hundred seventy-two thousand, one hundred thirty-two".